SecurityPkg: Clean up source files

1. Do not use tab characters
2. No trailing white space in one line
3. All files must end with CRLF

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>

SecurityPkg/Library/Tpm2CommandLib/Tpm2Context.c

@@ -1,7 +1,7 @@
 /** @file
   Implement TPM2 Context related command.
 
-Copyright (c) 2014, Intel Corporation. All rights reserved. <BR>
+Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved. <BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -36,7 +36,7 @@ typedef struct {
   This command causes all context associated with a loaded object or session to be removed from TPM memory.
 
   @param[in]  FlushHandle        The handle of the item to flush.
-  
+
   @retval EFI_SUCCESS            Operation completed successfully.
   @retval EFI_DEVICE_ERROR       The command was unsuccessful.
 **/
@@ -59,7 +59,7 @@ Tpm2FlushContext (
   SendBuffer.Header.commandCode = SwapBytes32(TPM_CC_FlushContext);
 
   SendBuffer.FlushHandle = SwapBytes32 (FlushHandle);
- 
+
   SendBufferSize = (UINT32) sizeof (SendBuffer);
   SendBuffer.Header.paramSize = SwapBytes32 (SendBufferSize);